CN102092244A - Tire tread having serrated grooves - Google Patents

Tire tread having serrated grooves Download PDF

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Publication number
CN102092244A
CN102092244A CN2010105827493A CN201010582749A CN102092244A CN 102092244 A CN102092244 A CN 102092244A CN 2010105827493 A CN2010105827493 A CN 2010105827493A CN 201010582749 A CN201010582749 A CN 201010582749A CN 102092244 A CN102092244 A CN 102092244A
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CN
China
Prior art keywords
groove
serration
tyre surface
array
row
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2010105827493A
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Chinese (zh)
Other versions
CN102092244B (en
Inventor
J·T·简什
D·A·阿尔富德
K·S·金
B·D·迪曼
R·M·维兰
D·M·霍华德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of CN102092244A publication Critical patent/CN102092244A/en
Application granted granted Critical
Publication of CN102092244B publication Critical patent/CN102092244B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/032—Patterns comprising isolated recesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/032—Patterns comprising isolated recesses
    • B60C11/0323—Patterns comprising isolated recesses tread comprising channels under the tread surface, e.g. for draining water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1272—Width of the sipe
    • B60C11/1281—Width of the sipe different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0386—Continuous ribs
    • B60C2011/0388—Continuous ribs provided at the equatorial plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C2011/1231—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe being shallow, i.e. sipe depth of less than 3 mm

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to a tire thread having serrated grooves. A tread is configured to have three rows of tread elements, a center row and a pair of shoulder rows, the center row forming a circumferential rib positioned at an equatorial centerplane of the tread. Each shoulder row has a repeating circumferential array of upwardly extending elongate groove fingers, adjacent groove fingers within the repeating array of each shoulder row of groove fingers being connected by at least one laterally extending channel. An array of serrations line each longitudinal side of the channels, each serration defined by inward tapering serration sidewalls extending to a serration base surface. Each channel is submerged below an outward tread surface such that the submerged channel will emerge as the tread wears down.

Description

Tire protector with groove of band serration
Technical field
The present invention relates generally to tire protector.More specifically, the present invention relates to be used for the tyre surface that has the directional tread pattern ditch of tire.
Background technology
As time goes on, tire protector can wear and tear usually, thereby the usefulness of the groove in the tire protector and functional characteristic are reduced.Some tyre performance characteristic may be subjected to influencing unfriendly thus.
Summary of the invention
According to an aspect of the present invention, provide a kind of tyre surface, described tyre surface has the groove geometric configuration that manifests when tyre surface produces wearing and tearing.Described tyre surface comprises three row's tyre surface elements, a central row and a pair of tire shoulder row, and described central row forms circumferential decorative pattern strengthening rib at longitudinal plane of symmetry place, the equator of described tyre surface.Each tire shoulder row has the circumferential array of the repetition of upwardly extending elongated groove finger, and the adjacent groove finger in the repeat array of each tire shoulder row's groove finger is linked together by the groove of at least one horizontal expansion.The serration array extends along each vertical side of described groove, and each serration is limited by inside gradually thin (tapering) serration sidewall that extends to the serration basal surface.Described groove sinks under the outside tread surface, thereby makes the groove that sinks to display when tyre surface produces wearing and tearing.
On the other hand, each groove finger in the repeat array of each tire shoulder row's groove finger has a plurality of with the opposite side extended groove of alternative form from described groove finger, and each groove becomes certain inclination angle to extend towards the tyre surface element of central row.
According to a further aspect of the invention, the serration array of the vertical side of the described groove of lining (lining) plays the effect of covering up around the tread area of described groove.
Description of drawings
Present invention is described below in conjunction with accompanying drawing and by example, in described accompanying drawing,
Fig. 1 is the block diagram that does not have the tire of serration;
Fig. 2 is the block diagram that has the tire of serration;
Fig. 3 is the complete front elevation that has the tire of serration;
Fig. 4 is an imperfect view of taking from the amplification of Fig. 2, there is shown the serration position that is positioned on the hidden groove;
Fig. 5 is an imperfect front elevation of taking from the amplification of Fig. 3;
Fig. 6 is the section-drawing that shows serration side and hidden groove of taking from Fig. 4;
Fig. 7 is a section-drawing of taking from the serration of Fig. 4;
Fig. 8 A takes from the block diagram that showing of Fig. 6 is positioned at the treadwear situation at first position;
Fig. 8 B is the planar view of Fig. 8 A;
Fig. 9 A takes from the block diagram that showing of Fig. 6 is positioned at the treadwear situation at second position;
Fig. 9 B is the planar view of Fig. 9 A;
Figure 10 A takes from the block diagram that showing of Fig. 6 is positioned at the treadwear situation at the 3rd position;
Figure 10 B is the planar view of Figure 10 A.
The specific embodiment
Referring to Fig. 1 and Fig. 2, there is shown the tire 10 that is configured to have the sidewall 12,14 that extends to crown or tread area 16.Tyre surface 16 has three row's tyre surface elements 18,20,22; Be a pair of relative tire shoulder row 18,20 and the core strengthening rib 22 that circumferentially extends on the equator of described tire longitudinal plane of symmetry edge.Tire shoulder row 18,20 has the circumferential repeat array of the elongated groove finger 24 that separates separately.Each groove finger 24 has outside portion's section 26, thus described outside portion's section 26 start from the axial edge of tyre surface 16 and certainly this place groove finger middle section 28 of inwardly extending vertically with downward extension intersect.The middle section of each groove finger 24 is angled downwards towards core strengthening rib 22, ends at gradually thin end, inboard groove finger 30. Tire shoulder row 18,20 separates respectively with central row 22 by circumferential groove 32,34.Intersect with corresponding circumferentially groove 32,34 at inside 30 places, end, groove finger described groove finger.Groove finger 24 in the tire shoulder row 18,20 circumferentially is arranged in above the opposite side of core strengthening rib 22 alternately.
Provide circumferentially a series of horizontal cutter groove or the groove 36,40 that separates each other thereby tyre surface 16 is formed out, described horizontal cutter groove outwards extends towards tread edge substantially vertically from corresponding circumferentially groove 32 or 34.Laterally cutter groove 36,40 is for being molded in the minor groove in the tread bar strengthening rib, and it divides tread surface again and improves tractive property.Cutter groove 36 have between conventional roughly rectangular profile pattern and the adjacent groove finger in each tire shoulder row or the groove finger with tread edge than the groove portion section 38 of lacking between extend.Transverse groove or cutter groove 40 have serration and are positioned at the tire shoulder row of each tyre surface according to the present invention, extend between the adjacent groove finger of the groove of described band serration (serrated channel) 40 in each tire shoulder row or outwards extend vertically with crossing with tire shoulder groove element 42 from outside groove finger.The general cutter groove (also being called " groove " in this application) that uses Reference numeral 40 expression band serrations.As shown in Figures 2 and 3, the circumferential density of the groove 40 of band serration and arrange can make the groove 40A-E of a plurality of band serrations to extend vertically with the opposite side of staggered configuration from each groove finger 24 shown in scheming.The density of the groove of the described band serration that radially extends and layout can change, thereby provide traction and tyre surface partition functionality required for required specific tyre surface configuration by means of tire sipe.
In the groove 40 of described band serration each becomes less inclination angle to extend towards the core strengthening rib 22 of tyre surface vertically.Shown in Fig. 4,5,6 and 7, serration 40 extends through the line of centers that sinks to the groove 40 below the tread surface.Serration 40 is about 5 millimeters long on tread surface, and perhaps each of the line of centers of the cutter groove 40 that intersects at serration is 2.5 millimeters long above the side.Thus, the serration array 44,46 of the line of centers opposite side of the cutter groove 40 of serration 40 formation linings sinkings.Each serration 40 comprises the circumferential pattern ditch 48 between the inwardly gradually thin sidewall 50,52 that is limited at the basal surface 56 that extends to each groove 48 of being with serration.Opening or gap 64 on the line of centers of the groove 40 of the groove 48 of this band serration below rear wall 54 extends inwardly to.
The middle section 28 of the elongated downward extension of each groove finger 24 is limited by the sidewall that cuts corner angle 58 shown in Fig. 4,8A, 9A and the 10A.Groove 40 leads to corresponding groove finger 24 along the sidewall that cuts corner angle 58 of the corresponding groove finger that is positioned at channel opening 60 places.Channel opening 60 comprises being positioned at and leads to the opening portion of widening with the centre of the wideest bottom opening part 72 at corresponding 24 intersection location places, groove finger 70.Therefore, as shown in Figure of description, along with tyre surface radially inwardly produces wearing and tearing, groove 40 broadens and reaches the wideer width dimensions that is positioned at the place, bottom.
Referring to Fig. 6 and Fig. 7, there is shown the array 44,46 of the band serration of arranging perpendicular to the longitudinal centerline of groove 40.As can also be seen from Figure: groove 40 broadens at 60 places, position towards the bottom of the sidewall that cuts corner angle 58 that limits groove finger 24.The groove 48 of band serration is limited by sidewall 50,52, and the angled α of described sidewall is inwardly gradually thin, and described angle [alpha] is in the preferable range of 10 degree-60 degree, and the selected objective target value is 43 degree.In being in 0.3 millimeter-0.5 millimeter preferable range along the spacing W of outside tread surface 62 between the groove 48 of adjacent band serration, the selected objective target value is 0.4 millimeter.The depth D of each serration 48 is in 0.3 millimeter-0.5 millimeter the preferable range, and the selected objective target value is 0.4 millimeter.Each serration 48 about 5 millimeters long, perhaps each of the line of centers of cutter groove that intersects at serration or groove 40 is 2.5 millimeters long above the side.
Serration 48 is positioned in radially outside tread surface 62 places of cutter groove 40 from the sinking that only just manifests when enough big wearing and tearing take place tyre surface.Cutter groove 40 is limited at relative cutter cell wall 74,76(Fig. 6) between and extend to the lower area of widening 70 and extend to the wideest bottom section 72 at base plate 78 places that are positioned at groove 40.When wearing and tearing took place tyre surface, serration array 44,46 will be worn away until cutter groove 40 and display.Content as shown in Figure 6, Fig. 8 A and Fig. 8 B show the tyre surface configuration that shows during to the 8A level at treadwear.As Fig. 8 A and the shown tyre surface level of Fig. 8 B, can see that cutter groove 40 displays and be appreciiable.Reach as Fig. 9 A and the shown tyre surface level of Fig. 9 B along with tyre surface continues radially to be worn, lower wideer cutter slot part 70 will display.Cutter groove 40 reaches as the shown wideer width of Fig. 9 A and Fig. 9 B by broadening as Fig. 8 A and the shown narrower width of Fig. 8 B and the purpose that reaches as the shown wideer bottom width of Figure 10 A and Figure 10 B that finally broadens is: increase after the tire probable life in the groove volume.The beneficial effect of the increase of groove volume is to have improved the green property of tire under the situation of not disengaging the cutter groove.
Along with tyre surface continues wearing and tearing, as Figure 10 A and the shown tyre surface level of Figure 10 B place, the wideest lower area 72 of cutter groove 40 will display.In the whole process of tyre surface generation worn-down, for the tread surface groove of the routine that is removed along with worn-down, the functional purpose and the configuration that manifest part in turn of groove 40 are maintained.Thus, cutter groove 40 also can exist after tyre surface produces wearing and tearing and continue to carry out required traction and tyre surface partition functionality.
As previously described, should be noted that: stria 48 has highlighted the position of the groove 40 that is positioned at the sinking below the tread surface 62.The groove of this sinking will display when tyre surface produces wearing and tearing.Stria 48 has also played the secondary function that the zone of the groove 40 that makes sinking has aesthstic aesthetic appearance.When tire was taken out from mould, the mould element of the groove 40 of the sinking that is shaped can cause groove 40 zones to produce local variable color.Stria 48 and by the geometric configuration of the stria of gradually thin sidewall 52 expression, and stria array 44,46 helps the position of the groove 40 covering up described color change interval and highlight sinking along the layout of the opposite side of groove 40.
As can be known the present invention being made modification according to the application's specification sheets also is fine.Although, described some representational embodiment and details in this application for purpose of the present invention is described, for a person skilled in the art, can make multiple change and modification to the present invention obviously, this does not depart from scope of the present invention.Be understood that thus the change that described specific embodiments is carried out will fall within the protection scope of the present invention that is limited by appended claims.

Claims (10)

1. a tire protector is characterized in that, described tyre surface comprises:
At least three row's tyre surface elements, central row and a pair of tire shoulder row, described central row separates in each groove and described central row of circumferentially extending by corresponding edge that longitudinal plane of symmetry place, the equator of described tyre surface forms among circumferential decorative pattern strengthening rib and the described tire shoulder row;
Each tire shoulder row has the repetition circumferential array that comprises a plurality of upwardly extending elongated grooves finger, the adjacent groove finger in the repeat array of each tire shoulder row's groove finger by on tire axial direction substantially be connected at the opposed end place on the adjacent groove finger at least one longitudinally the groove that extends of axis link together; With
Each groove in the described groove is from radially outside tread surface sinking and have the longitudinal centerline plane, and each groove is limited by a pair of groove sidewall that extends to the bottom land surface that separates; And described tyre surface has first array and second array of serration of corresponding vertical side of lining groove, each serration extends in the tread surface and by the inside gradually thin serration sidewall that extends to the serration basal surface and limits, thereby and each serration inwardly extend with the center line plane of the angles of cut and the described groove that are substantially equal to 90 degree crossing.
2. tyre surface according to claim 1 is characterized in that, a plurality of at least serrations in each array have the degree of depth from radially outer tread surface to serration basal surface (D) of size in 0.3 millimeter-0.5 millimeter scope separately.
3. tyre surface according to claim 1 is characterized in that, a plurality of at least adjacent serrations in each array separate the spacing (W) of size in 0.3 millimeter-0.5 millimeter scope.
4. tyre surface according to claim 1, it is characterized in that, a plurality of at least serrations in each array have separately at radially outer tread surface place size in 0.65 millimeter-0.8 millimeter scope width dimensions and have the width of size in 0.3 millimeter-0.5 millimeter scope separately in the serration bottom surface.
5. tyre surface according to claim 1 is characterized in that, the gradually thin sidewall of a plurality of at least serrations forms size in the angle (α) of 10 degree to the 60 degree scopes.
6. tyre surface according to claim 1 is characterized in that, the serration array intersects with the center line plane of right angle and respective grooves substantially.
7. tyre surface according to claim 6 is characterized in that, each groove radially sinks towards the inside along the serration basal surface of the opposite side on groove center line plane from outside tread surface.
8. tyre surface according to claim 7 is characterized in that, a plurality of at least serrations have the degree of depth from radially outer tread surface to serration basal surface (D) of size in 0.3 millimeter-0.5 millimeter scope separately.
9. tyre surface according to claim 8 is characterized in that, the gradually thin sidewall of a plurality of at least serrations forms size in the angle (α) of 10 degree to the 60 degree scopes.
10. tyre surface according to claim 9, it is characterized in that, each groove finger in the repeat array of each tire shoulder row's groove finger has a plurality of opposite sides from described groove finger with the extended groove of alternative form, and each groove extends towards central row tyre surface element with certain inclination angle.
CN201010582749.3A 2009-12-11 2010-12-10 Tire tread having serrated grooves Expired - Fee Related CN102092244B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/636,004 US8393365B2 (en) 2009-12-11 2009-12-11 Tire tread having serrated grooves
US12/636004 2009-12-11
US12/636,004 2009-12-11

Publications (2)

Publication Number Publication Date
CN102092244A true CN102092244A (en) 2011-06-15
CN102092244B CN102092244B (en) 2014-07-23

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US (1) US8393365B2 (en)
EP (1) EP2332745B1 (en)
KR (1) KR101726000B1 (en)
CN (1) CN102092244B (en)
BR (1) BRPI1004583A2 (en)

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CN106457921A (en) * 2014-06-30 2017-02-22 米其林集团总公司 Variable-width sipe for tire tread and tire
CN112739553A (en) * 2018-11-09 2021-04-30 米其林集团总公司 Truck tire with water flow directing tread feature

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US20170057296A1 (en) * 2014-05-01 2017-03-02 The Yokohama Rubber Co., Ltd. Pneumatic Tire
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FR3034354B1 (en) 2015-03-31 2017-03-24 Michelin & Cie TIRE TREAD FOR TIRES WITH CHANNELS
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CN106457921A (en) * 2014-06-30 2017-02-22 米其林集团总公司 Variable-width sipe for tire tread and tire
CN106457921B (en) * 2014-06-30 2019-04-02 米其林集团总公司 The variable-width tread groove of tire tread and tire
CN112739553A (en) * 2018-11-09 2021-04-30 米其林集团总公司 Truck tire with water flow directing tread feature
CN112739553B (en) * 2018-11-09 2023-02-28 米其林集团总公司 Truck tire with water flow directing tread feature

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EP2332745A3 (en) 2012-06-06
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BRPI1004583A2 (en) 2013-03-05
CN102092244B (en) 2014-07-23
US8393365B2 (en) 2013-03-12
EP2332745A2 (en) 2011-06-15
US20110139325A1 (en) 2011-06-16
KR20110066869A (en) 2011-06-17

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